Ryuji Koike

5.3k total citations
80 papers, 1.6k citations indexed

About

Ryuji Koike is a scholar working on Rheumatology, Epidemiology and Infectious Diseases. According to data from OpenAlex, Ryuji Koike has authored 80 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Rheumatology, 19 papers in Epidemiology and 17 papers in Infectious Diseases. Recurrent topics in Ryuji Koike's work include Systemic Lupus Erythematosus Research (14 papers), Rheumatoid Arthritis Research and Therapies (13 papers) and Chronic Lymphocytic Leukemia Research (10 papers). Ryuji Koike is often cited by papers focused on Systemic Lupus Erythematosus Research (14 papers), Rheumatoid Arthritis Research and Therapies (13 papers) and Chronic Lymphocytic Leukemia Research (10 papers). Ryuji Koike collaborates with scholars based in Japan, United States and Mongolia. Ryuji Koike's co-authors include Nobuyuki Miyasaka, Tsutomu Takeuchi, Katsumi Eguchi, Tetsuo Kubota, Masayoshi Harigai, Hitoshi Kohsaka, Toshiki Watanabe, Noboru Mizushima, Shizuo Handa and Yasunori Kushi and has published in prestigious journals such as The Journal of Immunology, Applied and Environmental Microbiology and Neurology.

In The Last Decade

Ryuji Koike

74 papers receiving 1.5k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Ryuji Koike Japan 21 599 399 320 239 223 80 1.6k
Ranjana W. Minz India 23 448 0.7× 363 0.9× 310 1.0× 361 1.5× 292 1.3× 168 2.0k
Inger Gjertsson Sweden 26 541 0.9× 747 1.9× 400 1.3× 243 1.0× 99 0.4× 110 2.0k
Nancy R. Slifman United States 11 591 1.0× 423 1.1× 160 0.5× 274 1.1× 100 0.4× 11 1.5k
Takeshi Otsuka Japan 25 542 0.9× 1.0k 2.5× 458 1.4× 231 1.0× 160 0.7× 60 2.1k
M Salmon United Kingdom 22 605 1.0× 979 2.5× 263 0.8× 243 1.0× 90 0.4× 47 2.1k
Namita Misra France 24 147 0.2× 1.1k 2.8× 316 1.0× 276 1.2× 196 0.9× 50 2.3k
Akihiko Numata Japan 23 136 0.2× 607 1.5× 432 1.4× 219 0.9× 138 0.6× 87 1.8k
Zaher A. Radi United States 16 244 0.4× 416 1.0× 238 0.7× 135 0.6× 83 0.4× 64 1.4k
Diane U. Leong United States 10 278 0.5× 907 2.3× 468 1.5× 516 2.2× 146 0.7× 12 2.2k
Sara Alonso Spain 23 217 0.4× 577 1.4× 320 1.0× 159 0.7× 159 0.7× 103 1.9k

Countries citing papers authored by Ryuji Koike

Since Specialization
Citations

This map shows the geographic impact of Ryuji Koike's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ryuji Koike with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryuji Koike more than expected).

Fields of papers citing papers by Ryuji Koike

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryuji Koike. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ryuji Koike. The network helps show where Ryuji Koike may publish in the future.

Co-authorship network of co-authors of Ryuji Koike

This figure shows the co-authorship network connecting the top 25 collaborators of Ryuji Koike. A scholar is included among the top collaborators of Ryuji Koike based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ryuji Koike. Ryuji Koike is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Yamamoto, Masahide, Masataka Ishimura, Hirokazu Kanegane, et al.. (2024). JAK1/2 inhibitor ruxolitinib for the treatment of systemic chronic active Epstein-Barr virus disease: a phase 2 study. PubMed. 2(1). 100053–100053.
2.
Gu, Yoshiaki, et al.. (2023). Novel insights into genetic characteristics of blaGES-encoding plasmids from hospital sewage. Frontiers in Microbiology. 14. 1209195–1209195. 6 indexed citations
3.
Kameda, Hideto, Kunihiro Yamaoka, Yuji Yamanishi, et al.. (2023). Japan College of Rheumatology guidance for the use of methotrexate in patients with rheumatoid arthritis: Secondary publication. Modern Rheumatology. 34(1). 1–10. 14 indexed citations
4.
Mori, Masaaki, Shinichi Watabe, Mika Ishige, et al.. (2023). Safety, efficacy and pharmacokinetics of palivizumab in off-label neonates, infants, and young children at risk for serious respiratory syncytial virus infection: a multicenter phase II clinical trial. The Lancet Regional Health - Western Pacific. 39. 100847–100847. 4 indexed citations
5.
Hosoya, Tadashi, T. Yamaguchi, Sho Shibata, et al.. (2023). Thrombosis and antiphospholipid antibodies in Japanese COVID-19: based on propensity score matching. Frontiers in Immunology. 14. 1227547–1227547. 6 indexed citations
6.
7.
Yamazaki, Hayato, Tsutomu Takeuchi, Koichi Amano, et al.. (2020). Identification of molecules associated with response to abatacept in patients with rheumatoid arthritis. Arthritis Research & Therapy. 22(1). 46–46. 25 indexed citations
8.
Takagi, Masatoshi, Chitose Ogawa, Tomoko Iehara, et al.. (2019). Phase I clinical study of oral olaparib in pediatric patients with refractory solid tumors: study protocol. BMC Pediatrics. 19(1). 31–31. 8 indexed citations
9.
Saito, Ryoichi, Jun Nakajima, Kazunari Sonobe, et al.. (2019). Hypervirulent clade 2, ribotype 019/sequence type 67 Clostridioides difficile strain from Japan. Gut Pathogens. 11(1). 54–54. 8 indexed citations
10.
Ogihara, Shinji, Ryoichi Saito, Etsuko Sawabe, et al.. (2017). Molecular typing of methicillin-resistant Staphylococcus aureus: Comparison of PCR-based open reading frame typing, multilocus sequence typing, and Staphylococcus protein A gene typing. Journal of Infection and Chemotherapy. 24(4). 312–314. 9 indexed citations
11.
Tanimoto, Shinichi, Etsuko Sawabe, Yusuke Takahashi, et al.. (2014). Molecular epidemiology and antimicrobial susceptibility of Clostridium difficile isolated from a university teaching hospital in Japan. European Journal of Clinical Microbiology & Infectious Diseases. 34(4). 763–772. 50 indexed citations
12.
13.
Koike, Ryuji, Michi Tanaka, Yukiko Komano, et al.. (2011). Tacrolimus-induced pulmonary injury in rheumatoid arthritis patients. Pulmonary Pharmacology & Therapeutics. 24(4). 401–406. 21 indexed citations
14.
Kubota, Tetsuo & Ryuji Koike. (2010). Cryopyrin-associated periodic syndromes: background and therapeutics. Modern Rheumatology. 20(3). 213–221. 30 indexed citations
15.
Kaneko, Kayoko, Yoshinori Nonomura, Kaori Watanabe, et al.. (2009). Infected abdominal aortic aneurysm caused by nontyphoid Salmonella in an immunocompromised patient with rheumatoid arthritis. Journal of Infection and Chemotherapy. 15(5). 312–315. 5 indexed citations
16.
Iizuka, Toshihiko, Toshiyuki Tanaka, Makoto Suematsu, et al.. (2000). Stage-Specific Expression of Mucosal Addressin Cell Adhesion Molecule-1 During Embryogenesis in Rats. The Journal of Immunology. 164(5). 2463–2471. 48 indexed citations
17.
18.
Hamamoto, Kiichi, et al.. (1997). Rapid and sensitive determination of amprolium in chicken plasma by high-performance liquid chromatography with post-column reaction. Journal of Chromatography B Biomedical Sciences and Applications. 693(2). 489–492. 15 indexed citations
19.
Koike, Ryuji, Toshihide Nishimura, Ryoji Yasumizu, et al.. (1996). The splenic marginal zone is absent in alymphoplastic aly mutant mice. European Journal of Immunology. 26(3). 669–675. 76 indexed citations
20.
Eguchi, I., et al.. (1994). [Correlation between degrees of the CTG repeat expansion and clinical features of myotonic dystrophy].. PubMed. 34(2). 118–23. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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